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9eb59592 | 1 | \input texinfo @c -*-texinfo-*- |
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2 | |
3 | @include gnus-overrides.texi | |
4 | ||
e280480a | 5 | @setfilename ../../info/auth |
5dc584b5 | 6 | @settitle Emacs auth-source Library @value{VERSION} |
9eb59592 | 7 | |
b8e0f0cd | 8 | @set VERSION 0.3 |
9eb59592 | 9 | |
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10 | @copying |
11 | This file describes the Emacs auth-source library. | |
12 | ||
f99f1641 | 13 | Copyright @copyright{} 2008--2012 Free Software Foundation, Inc. |
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14 | |
15 | @quotation | |
16 | Permission is granted to copy, distribute and/or modify this document | |
17 | under the terms of the GNU Free Documentation License, Version 1.3 or | |
18 | any later version published by the Free Software Foundation; with no | |
19 | Invariant Sections, with the Front-Cover texts being ``A GNU Manual,'' | |
20 | and with the Back-Cover Texts as in (a) below. A copy of the license | |
0b1af106 | 21 | is included in the section entitled ``GNU Free Documentation License''. |
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22 | |
23 | (a) The FSF's Back-Cover Text is: ``You have the freedom to copy and | |
6bf430d1 | 24 | modify this GNU manual.'' |
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25 | @end quotation |
26 | @end copying | |
27 | ||
0c973505 | 28 | @dircategory Emacs lisp libraries |
5dc584b5 | 29 | @direntry |
62e034c2 | 30 | * Auth-source: (auth). The Emacs auth-source library. |
5dc584b5 | 31 | @end direntry |
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32 | |
33 | @titlepage | |
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34 | @ifset WEBHACKDEVEL |
35 | @title Emacs auth-source Library (DEVELOPMENT VERSION) | |
36 | @end ifset | |
37 | @ifclear WEBHACKDEVEL | |
9eb59592 | 38 | @title Emacs auth-source Library |
7fbf7cae | 39 | @end ifclear |
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40 | @author by Ted Zlatanov |
41 | @page | |
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42 | @vskip 0pt plus 1filll |
43 | @insertcopying | |
44 | @end titlepage | |
9eb59592 | 45 | |
5dc584b5 | 46 | @contents |
9eb59592 | 47 | |
5dc584b5 | 48 | @ifnottex |
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49 | @node Top |
50 | @top Emacs auth-source | |
51 | This manual describes the Emacs auth-source library. | |
52 | ||
53 | It is a way for multiple applications to share a single configuration | |
54 | (in Emacs and in files) for user convenience. | |
55 | ||
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56 | @insertcopying |
57 | ||
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58 | @menu |
59 | * Overview:: Overview of the auth-source library. | |
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60 | * Help for users:: |
61 | * Secret Service API:: | |
62 | * Help for developers:: | |
63 | * GnuPG and EasyPG Assistant Configuration:: | |
0b1af106 | 64 | * GNU Free Documentation License:: The license for this documentation. |
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65 | * Index:: |
66 | * Function Index:: | |
67 | * Variable Index:: | |
9eb59592 | 68 | @end menu |
5dc584b5 | 69 | @end ifnottex |
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70 | |
71 | @node Overview | |
72 | @chapter Overview | |
73 | ||
38dc51ba | 74 | The auth-source library is simply a way for Emacs and Gnus, among |
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75 | others, to answer the old burning question ``What are my user name and |
76 | password?'' | |
b0b63450 | 77 | |
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78 | (This is different from the old question about burning ``Where is the |
79 | fire extinguisher, please?''.) | |
80 | ||
81 | The auth-source library supports more than just the user name or the | |
82 | password (known as the secret). | |
83 | ||
84 | Similarly, the auth-source library supports multiple storage backend, | |
85 | currently either the classic ``netrc'' backend, examples of which you | |
1df7defd | 86 | can see later in this document, or the Secret Service API@. This is |
b8e0f0cd | 87 | done with EIEIO-based backends and you can write your own if you want. |
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88 | |
89 | @node Help for users | |
90 | @chapter Help for users | |
91 | ||
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92 | ``Netrc'' files are a de facto standard. They look like this: |
93 | @example | |
38dc51ba | 94 | machine @var{mymachine} login @var{myloginname} password @var{mypassword} port @var{myport} |
b0b63450 | 95 | @end example |
9eb59592 | 96 | |
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97 | The @code{machine} is the server (either a DNS name or an IP address). |
98 | It's known as @var{:host} in @code{auth-source-search} queries. You | |
99 | can also use @code{host}. | |
100 | ||
101 | The @code{port} is the connection port or protocol. It's known as | |
35123c04 | 102 | @var{:port} in @code{auth-source-search} queries. |
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103 | |
104 | The @code{user} is the user name. It's known as @var{:user} in | |
105 | @code{auth-source-search} queries. You can also use @code{login} and | |
106 | @code{account}. | |
107 | ||
108 | Spaces are always OK as far as auth-source is concerned (but other | |
109 | programs may not like them). Just put the data in quotes, escaping | |
3c93d00f | 110 | quotes as you'd expect with @samp{\}. |
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111 | |
112 | All these are optional. You could just say (but we don't recommend | |
113 | it, we're just showing that it's possible) | |
38dc51ba | 114 | |
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115 | @example |
116 | password @var{mypassword} | |
117 | @end example | |
38dc51ba | 118 | |
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119 | to use the same password everywhere. Again, @emph{DO NOT DO THIS} or |
120 | you will be pwned as the kids say. | |
38dc51ba | 121 | |
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122 | ``Netrc'' files are usually called @file{.authinfo} or @file{.netrc}; |
123 | nowadays @file{.authinfo} seems to be more popular and the auth-source | |
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124 | library encourages this confusion by accepting both, as you'll see |
125 | later. | |
38dc51ba | 126 | |
b8e0f0cd | 127 | If you have problems with the search, set @code{auth-source-debug} to |
733afdf4 | 128 | @code{'trivia} and see what host, port, and user the library is |
3c93d00f | 129 | checking in the @samp{*Messages*} buffer. Ditto for any other |
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130 | problems, your first step is always to see what's being checked. The |
131 | second step, of course, is to write a blog entry about it and wait for | |
132 | the answer in the comments. | |
38dc51ba KY |
133 | |
134 | You can customize the variable @code{auth-sources}. The following may | |
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135 | be needed if you are using an older version of Emacs or if the |
136 | auth-source library is not loaded for some other reason. | |
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137 | |
138 | @lisp | |
b0b63450 | 139 | (require 'auth-source) ;; probably not necessary |
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140 | (customize-variable 'auth-sources) ;; optional, do it once |
141 | @end lisp | |
142 | ||
143 | @defvar auth-sources | |
144 | ||
38dc51ba | 145 | The @code{auth-sources} variable tells the auth-source library where |
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146 | your netrc files or Secret Service API collection items live for a |
147 | particular host and protocol. While you can get fancy, the default | |
148 | and simplest configuration is: | |
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149 | |
150 | @lisp | |
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151 | ;;; old default: required :host and :port, not needed anymore |
152 | (setq auth-sources '((:source "~/.authinfo.gpg" :host t :port t))) | |
bd3e840f KY |
153 | ;;; mostly equivalent (see below about fallbacks) but shorter: |
154 | (setq auth-sources '((:source "~/.authinfo.gpg"))) | |
b8e0f0cd | 155 | ;;; even shorter and the @emph{default}: |
4a3988d5 | 156 | (setq auth-sources '("~/.authinfo.gpg" "~/.authinfo" "~/.netrc")) |
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157 | ;;; use the Secrets API @var{Login} collection (@pxref{Secret Service API}) |
158 | (setq auth-sources '("secrets:Login")) | |
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159 | @end lisp |
160 | ||
38dc51ba | 161 | By adding multiple entries to @code{auth-sources} with a particular |
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162 | host or protocol, you can have specific netrc files for that host or |
163 | protocol. Usually this is unnecessary but may make sense if you have | |
164 | shared netrc files or some other unusual setup (90% of Emacs users | |
165 | have unusual setups and the remaining 10% are @emph{really} unusual). | |
9eb59592 | 166 | |
b8e0f0cd | 167 | Here's a mixed example using two sources: |
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168 | |
169 | @lisp | |
170 | (setq auth-sources '((:source (:secrets default) :host "myserver" :user "joe") | |
b8e0f0cd | 171 | "~/.authinfo.gpg")) |
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172 | @end lisp |
173 | ||
b0b63450 | 174 | @end defvar |
9eb59592 | 175 | |
38dc51ba | 176 | If you don't customize @code{auth-sources}, you'll have to live with |
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177 | the defaults: the unencrypted netrc file @file{~/.authinfo} will be |
178 | used for any host and any port. | |
b8e0f0cd | 179 | |
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180 | If that fails, any host and any port are looked up in the netrc file |
181 | @file{~/.authinfo.gpg}, which is a GnuPG encrypted file (@pxref{GnuPG | |
182 | and EasyPG Assistant Configuration}). | |
183 | ||
184 | Finally, the unencrypted netrc file @file{~/.netrc} will be used for | |
185 | any host and any port. | |
9eb59592 | 186 | |
b8e0f0cd | 187 | The typical netrc line example is without a port. |
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188 | |
189 | @example | |
190 | machine YOURMACHINE login YOU password YOURPASSWORD | |
191 | @end example | |
192 | ||
193 | This will match any authentication port. Simple, right? But what if | |
194 | there's a SMTP server on port 433 of that machine that needs a | |
195 | different password from the IMAP server? | |
196 | ||
197 | @example | |
198 | machine YOURMACHINE login YOU password SMTPPASSWORD port 433 | |
199 | machine YOURMACHINE login YOU password GENERALPASSWORD | |
200 | @end example | |
201 | ||
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202 | For url-auth authentication (HTTP/HTTPS), you need to put this in your |
203 | netrc file: | |
204 | ||
205 | @example | |
206 | machine yourmachine.com:80 port http login testuser password testpass | |
207 | @end example | |
208 | ||
b0b63450 | 209 | This will match any realm and authentication method (basic or digest) |
1df7defd | 210 | over HTTP@. HTTPS is set up similarly. If you want finer controls, |
b0b63450 | 211 | explore the url-auth source code and variables. |
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212 | |
213 | For Tramp authentication, use: | |
214 | ||
215 | @example | |
216 | machine yourmachine.com port scp login testuser password testpass | |
217 | @end example | |
218 | ||
219 | Note that the port denotes the Tramp connection method. When you | |
220 | don't use a port entry, you match any Tramp method, as explained | |
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221 | earlier. Since Tramp has about 88 connection methods, this may be |
222 | necessary if you have an unusual (see earlier comment on those) setup. | |
9eb59592 | 223 | |
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224 | @node Secret Service API |
225 | @chapter Secret Service API | |
226 | ||
0317dd51 MA |
227 | The @dfn{Secret Service API} is a standard from |
228 | @uref{http://www.freedesktop.org/wiki/Specifications/secret-storage-spec,,freedesktop.org} | |
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229 | to securely store passwords and other confidential information. This |
230 | API is implemented by system daemons such as the GNOME Keyring and the | |
231 | KDE Wallet (these are GNOME and KDE packages respectively and should | |
232 | be available on most modern GNU/Linux systems). | |
0317dd51 | 233 | |
ca2c89b6 | 234 | The auth-source library uses the @file{secrets.el} library to connect |
1df7defd | 235 | through the Secret Service API@. You can also use that library in |
ca2c89b6 | 236 | other packages, it's not exclusive to auth-source. |
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237 | |
238 | @defvar secrets-enabled | |
239 | After loading @file{secrets.el}, a non-@code{nil} value of this | |
240 | variable indicates the existence of a daemon providing the Secret | |
241 | Service API. | |
242 | @end defvar | |
243 | ||
244 | @deffn Command secrets-show-secrets | |
ca2c89b6 | 245 | This command shows all collections, items, and their attributes. |
0317dd51 MA |
246 | @end deffn |
247 | ||
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248 | The atomic objects managed by the Secret Service API are @dfn{secret |
249 | items}, which contain things an application wishes to store securely, | |
250 | like a password. Secret items have a label (a name), the @dfn{secret} | |
251 | (which is the string we want, like a password), and a set of lookup | |
252 | attributes. The attributes can be used to search and retrieve a | |
253 | secret item at a later date. | |
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254 | |
255 | Secret items are grouped in @dfn{collections}. A collection is | |
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256 | sometimes called a @samp{keyring} or @samp{wallet} in GNOME Keyring |
257 | and KDE Wallet but it's the same thing, a group of secrets. | |
258 | Collections are personal and protected so only the owner can open them. | |
0317dd51 | 259 | |
c8bf3227 | 260 | The most common collection is called @code{"login"}. |
ca2c89b6 | 261 | |
c8bf3227 | 262 | A collection can have an alias. The alias @code{"default"} is |
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263 | commonly used so the clients don't have to know the specific name of |
264 | the collection they open. Other aliases are not supported yet. | |
c8bf3227 | 265 | Since aliases are globally accessible, set the @code{"default"} alias |
ca2c89b6 | 266 | only when you're sure it's appropriate. |
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267 | |
268 | @defun secrets-list-collections | |
ca2c89b6 | 269 | This function returns all the collection names as a list. |
0317dd51 MA |
270 | @end defun |
271 | ||
272 | @defun secrets-set-alias collection alias | |
273 | Set @var{alias} as alias of collection labeled @var{collection}. | |
c8bf3227 | 274 | Currently only the alias @code{"default"} is supported. |
0317dd51 MA |
275 | @end defun |
276 | ||
277 | @defun secrets-get-alias alias | |
278 | Return the collection name @var{alias} is referencing to. | |
c8bf3227 | 279 | Currently only the alias @code{"default"} is supported. |
0317dd51 MA |
280 | @end defun |
281 | ||
282 | Collections can be created and deleted by the functions | |
283 | @code{secrets-create-collection} and @code{secrets-delete-collection}. | |
ca2c89b6 | 284 | Usually, this is not done from within Emacs. Do not delete standard |
c8bf3227 | 285 | collections such as @code{"login"}. |
ca2c89b6 | 286 | |
c8bf3227 | 287 | The special collection @code{"session"} exists for the lifetime of the |
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288 | corresponding client session (in our case, Emacs's lifetime). It is |
289 | created automatically when Emacs uses the Secret Service interface and | |
290 | it is deleted when Emacs is killed. Therefore, it can be used to | |
c8bf3227 | 291 | store and retrieve secret items temporarily. The @code{"session"} |
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292 | collection is better than a persistent collection when the secret |
293 | items should not live longer than Emacs. The session collection can | |
c8bf3227 | 294 | be specified either by the string @code{"session"}, or by @code{nil}, |
ca2c89b6 | 295 | whenever a collection parameter is needed in the following functions. |
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296 | |
297 | @defun secrets-list-items collection | |
ca2c89b6 | 298 | Returns all the item labels of @var{collection} as a list. |
0317dd51 MA |
299 | @end defun |
300 | ||
301 | @defun secrets-create-item collection item password &rest attributes | |
302 | This function creates a new item in @var{collection} with label | |
aebd5f1a | 303 | @var{item} and password @var{password}. @var{attributes} are |
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304 | key-value pairs set for the created item. The keys are keyword |
305 | symbols, starting with a colon. Example: | |
306 | ||
307 | @example | |
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308 | ;;; The session "session", the label is "my item" |
309 | ;;; and the secret (password) is "geheim" | |
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310 | (secrets-create-item "session" "my item" "geheim" |
311 | :method "sudo" :user "joe" :host "remote-host") | |
312 | @end example | |
313 | @end defun | |
314 | ||
315 | @defun secrets-get-secret collection item | |
316 | Return the secret of item labeled @var{item} in @var{collection}. | |
317 | If there is no such item, return @code{nil}. | |
318 | @end defun | |
319 | ||
320 | @defun secrets-delete-item collection item | |
321 | This function deletes item @var{item} in @var{collection}. | |
322 | @end defun | |
323 | ||
324 | The lookup attributes, which are specified during creation of a | |
325 | secret item, must be a key-value pair. Keys are keyword symbols, | |
326 | starting with a colon; values are strings. They can be retrieved | |
ca2c89b6 | 327 | from a given secret item and they can be used for searching of items. |
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328 | |
329 | @defun secrets-get-attribute collection item attribute | |
330 | Returns the value of key @var{attribute} of item labeled @var{item} in | |
331 | @var{collection}. If there is no such item, or the item doesn't own | |
332 | this key, the function returns @code{nil}. | |
333 | @end defun | |
334 | ||
335 | @defun secrets-get-attributes collection item | |
336 | Return the lookup attributes of item labeled @var{item} in | |
337 | @var{collection}. If there is no such item, or the item has no | |
338 | attributes, it returns @code{nil}. Example: | |
339 | ||
340 | @example | |
341 | (secrets-get-attributes "session" "my item") | |
342 | @result{} ((:user . "joe") (:host ."remote-host")) | |
343 | @end example | |
344 | @end defun | |
345 | ||
346 | @defun secrets-search-items collection &rest attributes | |
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347 | Search for the items in @var{collection} with matching |
348 | @var{attributes}. The @var{attributes} are key-value pairs, as used | |
349 | in @code{secrets-create-item}. Example: | |
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350 | |
351 | @example | |
352 | (secrets-search-items "session" :user "joe") | |
353 | @result{} ("my item" "another item") | |
354 | @end example | |
355 | @end defun | |
bd3e840f | 356 | |
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357 | The auth-source library uses the @file{secrets.el} library and thus |
358 | the Secret Service API when you specify a source matching | |
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359 | @code{"secrets:COLLECTION"}. For instance, you could use |
360 | @code{"secrets:session"} to use the @code{"session"} collection, open only | |
361 | for the lifetime of Emacs. Or you could use @code{"secrets:Login"} to | |
362 | open the @code{"Login"} collection. As a special case, you can use the | |
ca2c89b6 | 363 | symbol @code{default} in @code{auth-sources} (not a string, but a |
c8bf3227 | 364 | symbol) to specify the @code{"default"} alias. Here is a contrived |
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365 | example that sets @code{auth-sources} to search three collections and |
366 | then fall back to @file{~/.authinfo.gpg}. | |
367 | ||
368 | @example | |
369 | (setq auth-sources '(default | |
370 | "secrets:session" | |
371 | "secrets:Login" | |
372 | "~/.authinfo.gpg")) | |
373 | @end example | |
374 | ||
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375 | @node Help for developers |
376 | @chapter Help for developers | |
377 | ||
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378 | The auth-source library lets you control logging output easily. |
379 | ||
380 | @defvar auth-source-debug | |
3c93d00f GM |
381 | Set this variable to @code{'trivia} to see lots of output in |
382 | @samp{*Messages*}, or set it to a function that behaves like | |
383 | @code{message} to do your own logging. | |
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384 | @end defvar |
385 | ||
b8e0f0cd | 386 | The auth-source library only has a few functions for external use. |
9eb59592 | 387 | |
aebd5f1a GM |
388 | @defun auth-source-search &rest spec &key type max host user port secret require create delete &allow-other-keys |
389 | This function searches (or modifies) authentication backends according | |
390 | to @var{spec}. See the function's doc-string for details. | |
391 | @c TODO more details. | |
b8e0f0cd | 392 | @end defun |
9eb59592 | 393 | |
733afdf4 | 394 | Let's take a look at an example of using @code{auth-source-search} |
aebd5f1a | 395 | from Gnus's @code{nnimap.el}. |
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396 | |
397 | @example | |
398 | (defun nnimap-credentials (address ports) | |
399 | (let* ((auth-source-creation-prompts | |
400 | '((user . "IMAP user at %h: ") | |
401 | (secret . "IMAP password for %u@@%h: "))) | |
402 | (found (nth 0 (auth-source-search :max 1 | |
403 | :host address | |
404 | :port ports | |
405 | :require '(:user :secret) | |
406 | :create t)))) | |
407 | (if found | |
408 | (list (plist-get found :user) | |
3107d2a5 KY |
409 | (let ((secret (plist-get found :secret))) |
410 | (if (functionp secret) | |
411 | (funcall secret) | |
412 | secret)) | |
413 | (plist-get found :save-function)) | |
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414 | nil))) |
415 | @end example | |
416 | ||
417 | This call requires the user and password (secret) to be in the | |
418 | results. It also requests that an entry be created if it doesn't | |
419 | exist already. While the created entry is being assembled, the shown | |
420 | prompts will be used to interact with the user. The caller can also | |
421 | pass data in @code{auth-source-creation-defaults} to supply defaults | |
422 | for any of the prompts. | |
423 | ||
424 | Note that the password needs to be evaluated if it's a function. It's | |
425 | wrapped in a function to provide some security. | |
426 | ||
6196cffe | 427 | Later, after a successful login, @code{nnimap.el} calls the |
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428 | @code{:save-function} like so: |
429 | ||
430 | @example | |
431 | (when (functionp (nth 2 credentials)) | |
432 | (funcall (nth 2 credentials))) | |
3107d2a5 | 433 | @end example |
733afdf4 | 434 | |
4248cca2 | 435 | This will work whether the @code{:save-function} was provided or not. |
733afdf4 TZ |
436 | @code{:save-function} will be provided only when a new entry was |
437 | created, so this effectively says ``after a successful login, save the | |
438 | authentication information we just used, if it was newly created.'' | |
439 | ||
4248cca2 TZ |
440 | After the first time it's called, the @code{:save-function} will not |
441 | run again (but it will log something if you have set | |
442 | @code{auth-source-debug} to @code{'trivia}). This is so it won't ask | |
443 | the same question again, which is annoying. This is so it won't ask | |
444 | the same question again, which is annoying. This is so it won't ask | |
445 | the same question again, which is annoying. | |
446 | ||
447 | So the responsibility of the API user that specified @code{:create t} | |
448 | is to call the @code{:save-function} if it's provided. | |
449 | ||
aebd5f1a GM |
450 | @defun auth-source-delete &rest spec &key delete &allow-other-keys |
451 | This function deletes entries matching @var{spec} from the | |
452 | authentication backends. It returns the entries that were deleted. | |
453 | The backend may not actually delete the entries. | |
b8e0f0cd | 454 | @end defun |
bd3e840f | 455 | |
aebd5f1a GM |
456 | @defun auth-source-forget spec |
457 | This function forgets any cached data that exactly matches @var{spec}. | |
458 | It returns @code{t} if it forget some data, and @code{nil} if no | |
459 | matching data was found. | |
b8e0f0cd G |
460 | @end defun |
461 | ||
aebd5f1a GM |
462 | @defun auth-source-forget+ &rest spec &allow-other-keys |
463 | This function forgets any cached data matching @var{spec}. | |
464 | It returns the number of items forgotten. | |
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465 | @end defun |
466 | ||
36d3245f G |
467 | @node GnuPG and EasyPG Assistant Configuration |
468 | @appendix GnuPG and EasyPG Assistant Configuration | |
469 | ||
98e2b864 | 470 | If you don't customize @code{auth-sources}, the auth-source library |
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471 | reads @file{~/.authinfo.gpg}, which is a GnuPG encrypted file. Then |
472 | it will check @file{~/.authinfo} but it's not recommended to use such | |
7ba93e94 | 473 | an unencrypted file. |
98e2b864 | 474 | |
36d3245f | 475 | In Emacs 23 or later there is an option @code{auto-encryption-mode} to |
3c93d00f | 476 | automatically decrypt @file{*.gpg} files. It is enabled by default. |
a1d16a7b | 477 | If you are using earlier versions of Emacs, you will need: |
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478 | |
479 | @lisp | |
480 | (require 'epa-file) | |
481 | (epa-file-enable) | |
482 | @end lisp | |
483 | ||
98e2b864 | 484 | If you want your GnuPG passwords to be cached, set up @code{gpg-agent} |
fe3c5669 | 485 | or EasyPG Assistant |
c56dfd36 | 486 | (@pxref{Caching Passphrases, , Caching Passphrases, epa}). |
36d3245f | 487 | |
98e2b864 | 488 | To quick start, here are some questions: |
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489 | |
490 | @enumerate | |
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491 | @item |
492 | Do you use GnuPG version 2 instead of GnuPG version 1? | |
493 | @item | |
494 | Do you use symmetric encryption rather than public key encryption? | |
495 | @item | |
496 | Do you want to use gpg-agent? | |
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497 | @end enumerate |
498 | ||
499 | Here are configurations depending on your answers: | |
500 | ||
501 | @multitable {111} {222} {333} {configuration configuration configuration} | |
502 | @item @b{1} @tab @b{2} @tab @b{3} @tab Configuration | |
98e2b864 | 503 | @item Yes @tab Yes @tab Yes @tab Set up gpg-agent. |
36d3245f | 504 | @item Yes @tab Yes @tab No @tab You can't, without gpg-agent. |
98e2b864 | 505 | @item Yes @tab No @tab Yes @tab Set up gpg-agent. |
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506 | @item Yes @tab No @tab No @tab You can't, without gpg-agent. |
507 | @item No @tab Yes @tab Yes @tab Set up elisp passphrase cache. | |
508 | @item No @tab Yes @tab No @tab Set up elisp passphrase cache. | |
98e2b864 | 509 | @item No @tab No @tab Yes @tab Set up gpg-agent. |
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510 | @item No @tab No @tab No @tab You can't, without gpg-agent. |
511 | @end multitable | |
512 | ||
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513 | To set up gpg-agent, follow the instruction in GnuPG manual |
514 | (@pxref{Invoking GPG-AGENT, , Invoking GPG-AGENT, gnupg}). | |
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515 | |
516 | To set up elisp passphrase cache, set | |
517 | @code{epa-file-cache-passphrase-for-symmetric-encryption}. | |
518 | ||
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519 | @node GNU Free Documentation License |
520 | @appendix GNU Free Documentation License | |
521 | @include doclicense.texi | |
522 | ||
9eb59592 | 523 | @node Index |
0b1af106 | 524 | @unnumbered Index |
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525 | @printindex cp |
526 | ||
527 | @node Function Index | |
0b1af106 | 528 | @unnumbered Function Index |
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529 | @printindex fn |
530 | ||
531 | @node Variable Index | |
0b1af106 | 532 | @unnumbered Variable Index |
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533 | @printindex vr |
534 | ||
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535 | @bye |
536 | ||
537 | @c End: |